The stamps are not new, in fact those are two previous values overprinted to denote the occasion. The 6p (view from Kaghan Valley, 1954) and 8a taken from Industrial set of 1955.
The overprint was in black reading \"PAKISTAN/BOY SCOUTS\"/ 2nd NATIONAL/ JAMBOREE/ CHITTAGONG/ DEC. 58-JAN.59\". Its vertical measurement differs for its format shape. On lower value (vertical) its size is 23.5mm and on 8a horizontal the overprint is only l5mm. Its breadth on both values is the same; 16.5mm. The overprint was applied by letterpress by PSPC.
On 30-4-1959 the stamps were withdrawn.